[160418] in North American Network Operators' Group
Re: AT&T Uverse/DSL Network Engineer DNS question
daemon@ATHENA.MIT.EDU (Jonathan Lassoff)
Tue Feb 5 16:10:46 2013
In-Reply-To: <BLU002-W57390C6D2771A09DEE9486AC000@phx.gbl>
Date: Tue, 5 Feb 2013 13:10:33 -0800
From: Jonathan Lassoff <jof@thejof.com>
To: tim.haak@hotmail.com
Cc: "nanog@nanog.org" <nanog@nanog.org>
Errors-To: nanog-bounces+nanog.discuss=bloom-picayune.mit.edu@nanog.org
These appear to be an anycasted service, as I reach different destinations
based on my source address.
Hopefully each deployment has unique origin IPs for their recursive queries.
I would recommend against looking at RIR registration data to determine IP
location. There's often little to no correlation, there.
--j
On Tue, Feb 5, 2013 at 1:01 PM, Tim Haak <thaitim43@hotmail.com> wrote:
>
>
>
>
>
>
>
>
>
> Hi,
>
>
>
>
> Can a AT&T Uverse/DSL Network Engineer answer a question about the DNS
> server IPs that are handed out to customers please? I am currently testing
> from
> a Florida IP. Can you please let me know if all Uverse and DSL customers
> across the United States only use these 2 IPs as their primary and
> secondary
> DNS servers?
>
>
>
> 68.94.156.1
>
> 68.94.157.1
>
>
>
> We
> provide services based on IP GEO-location. Since the 2 recursive resolvers
> below are registered in Texas every DNS query for any of our records return
> results that are intended for IPs in that region. In other words, users on
> the
> east coast would actually resolve to a central part of the US or west
> coast IP.
>
>
>
> Thanks
> in advance,Tim
>
>
>
>
